Brière
IUCN VRegional Nature Park · 1970
566 km²
Commune · FRA
France
Species observed
2 553
Observations
31 136
Area
31,3km²
Sample of 38 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Tissu écologique de Montoir-de-Bretagne : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 108 interactions GloBI sur 5 types (connectance 13.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
2 553 distinct species · 31 136 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
12,4°C
Annual rain
772mm
Warmest m°
22,4°C
Coldest m°
3,8°C
Elevation: 2 m on average (min -7 m, max 5 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
6,5
Org. C
71,3g/kg
Clay
21,8%
Sand
33,5%
Silt
44,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Loire-Atlantique
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
3,2km
Lake surface here
1,96km²
Basins crossed
1
Max stream order
3
Max drainage
1 138km²
Discharge in basins
0,0m³/s
Mean precip.
814mm/an
Mean T°
11,7°C
Moisture idx
0,04
Max snow
5%
Mean runoff
527mm/an
Mean elev. (basins)
16m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
17,4nW
Built-up
646,6%
Pesticides
44,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Regional Nature Park · 1970
566 km²
Special Areas of Conservation (Habitats Directive) · 2014
218 km²
Special Protection Area (Birds Directive) · 2018
202 km²
Special Protection Area (Birds Directive) · 2019
198 km²
Wetland of International Importance (Ramsar Site) · 1995
174 km²
Special Areas of Conservation (Habitats Directive) · 2015
167 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.